Auto Electrician | No Communication | ECU Repair | Immobiliser Repair | BCM Repair | Steering Assist Repair

Auto Electrician Hays Ltd provides its car repair services comprising of BMW, Mercedes, Audi, VW, Toyota, Honda Electrical | Electronics Circuit Board Repair | Car Diagnostic Tests | ECU | BCM | Immobiliser | Instrument Cluster | ABS | Programming | Coding | Cloning | Wiring | Communication. 

Please Note:

We do not install any aftermarket products. We do not repair the modified vehicle, for example, caravans, icecream vans, modified racing cars, Luton vans or agriculture machinery. 

Car Diagnostic Test

Toyota Diagnostic _ Auto Electrician Hayes

Car Engine Diagnostic Test is essential to repair a car. Present cars have fitted OBDII OBD2 sockets for diagnostic tests because they are full of electronic controllers that keep the vehicle in their control. Now it is not possible to use a guess to repair a car. These controllers are purpose-built. To have a car diagnostic test, the technician must know about the electronic controllers' way of work because these controllers calculate their actuators, sensors, and solenoids through voltages. It is all about the mathematical calculation of voltages of the electronics components. 


The car's live data (PIDs) calculation tells the technician the behaviour of the car's system. The diagnostic technician's failure to diagnose the vehicle can disturb the electronic system and waste customers' money and time.


We Auto Electrician Hayes deal with car electrical and electronics faults repair. We are trained to repair electrical and electronics; therefore, we can take the proper vehicle diagnostic test. 

Car Wiring Repair 

CAN-Bus Repair _ Auto Electrician Hayes

The modern cars' electronics are vulnerable; it demands using the latest techniques to save electronics sensitive data that is programmed by the manufacturer. For example, radio codes deleted or other car programmes are deleted after battery replacement. Considering these issues, we are using Car Manufacturers' repair portals to get wiring diagrams and the related data according to the Car VIN (vehicle identification number). And this makes us different in the market. 

To help DIY customers we offer FREE Car Wiring Diagrams. Please read more going to the page.

CAN Bus Repair

2019 Nissan Micra Flood Damaged repaired | Auto Electrician Hayes

CAN Bus Repair is a time-consuming job. Can-Bus the (Controllers Area Network) is the most sensitive area when you have a Car Diagnostic Test and receive U Codes it means there is a problem in the CAN Bus or any controller is not functioning correctly. Car CAN Bus is comprised of two twisted wires, and these wires can have different colours. CAN Bus faults we diagnose using an oscilloscope that gives us the right direction to trace CAN-Bus faults and repair them.

Car ECU Repair

ECU Repair | Auto Electrician Hayes

Engine Control Unit is a computer that controls all the controllers and the sub-controllers. It has a motherboard, or you can call it a Circuit Board with hundreds of electronics components in the circuit. IIt receives signals from the car sensors and orders to its related sub-controllers. Any power fluctuation, water or rust can damage the circuit board. Short-Circuiting can burn some components of the ECU board. We Auto Electrician Hayes test the Car ECU circuit board, repair and program it. Would you please call us for Car ECU Repair?

Car ECU Programming

ECU Programming and cloning | Auto Elect

An Electronic Control Unit is an Embedded System in-car electronics that is comprised of many memory chips. These memory chips keep the car data safe to run the system accordingly. The Vehicle Identity Number (VIN) has 17 digits, and it is the ID of the vehicle. When you unlock the car with the remote control or turn on the car ignition switch, the ECU reads the fed VIN if the VIN is not the same it refuses the car starting order. It passes the information through the Controller Area Network (CAN Bus) to all the controllers and the sub-controllers of the vehicle.  Like VIN there are other many CODES saved in the microchips. If these codes vanish from the chips, the car will refuse to start or bring faults. Car ECU Programming is basically to download the original car configuration files and upload to the car computer that is called ECU (Engine Control Unit)

Car BCM Repair

Body Control Module Repair | Auto Electr

Body Control Modul  Repair (BCM) | Body Systems Interface (BSI) | Electronics Control Module (ECM)

The car manufacturers use different technology and give other names to their electronics parts. For example, French manufacturers call this module BSI, VW calls it ECM therefore, as I have already explained in What Is OBDII System that every car has four parts of it. Body Control Module controls the body related components like car headlights, car immobiliser, car key remote, car interior lights, car comfort and car entertainment etc. When BCM stops working then nothing with work that related to the body module, but if it is faulty, then some of the items will work, and some of them will not work. 
You cannot just buy from eBay and replace it because it has coding inside, you need to rebuild it before installing in your car.
Auto Electrician is ready to help you out repairing your car's all electronics faults and electronics modules.

Car Immobiliser Repair

Immobiliser Repair | Auto Electrician Ha

The car Doesn't start. Immobiliser red light is flashing or red solid, car not turning over car cranking but no start, fuel no coming. It means you have trouble with the Immobiliser and the car immobiliser needs to be changed or repaired. Our customers have given us 5 Start for this job. If you would like to know more about how the immobiliser work please go to Car Immobiliser Repair.

Car Central Locking Repair and Car Key Repair 

Car key repair and programming | Auto El

Car Central Locking system is a time-consuming job because it is comprised of four doors, four windows, a boot and Immobiliser System. It is not easy to handle quickly. We have to dismantle all the doors boot actuators and electronics, and sometimes we have to work on the under the dashboard installed equipment but the above picture is key fob and most of the time the key fob creates a problem. We also offer the car keyless fob programming and repair service as well. If you have this problem, you have to leave your car with us for repair, and it cannot be just a couple of hours job.

When we repair your car, we will call you to collect your vehicle. We Auto Electrician Hayes fix any vehicle make any model's Central Locking System with warranty.

Audio-Video And Navigation System Repair

We do not install the audio-video system, but we repair the original system's short-circuiting, Circuit Board, wiring faults and reprogramming.

Navigation System Repair

To repair the Navigation System, the customer should provide us with the original Navigation CD if the navigation system needs updating. In the case of short-circuiting in the motherboard or signal faults, we Auto Electrician Hayes repair these faults. 

Actuators Repair

Car actuators are comprised of solenoids, these actuators' work to pull or push any switch or anything you want to run with a switch, remote switch. Car throttle body, EGR Valve, car doors locking, car boot open or close, or car turbo control, these actuators help automatic transmission system. We Auto Electrician Hayes can help you to repair all kinds of car actuators.

DPF Regeneration

I have already covered this information on the DPF REGENERATION page and also have explained that "Deleting DPF From The Engine ECU Is Illegal". You can read what the car regeneration system is. Simply Diesel Particulate Filter is a pollution control system, and every car manufacturer has to fit in a diesel car by law.
We Auto Electrician Hayes is capable of dealing with all DPF related faults. 

Car Airconditioning / Car Heating Repair

The car airconditioning system depends on the comfort module; therefore, we only repair Comfort Module related faults. It can be No Communication with the modules, Short-Circuiting in the Loom's Wiring, Car Comfort Module Programming and Comfort Module Circuit Board Repairs. The modern Cars Heating System also works electronically from the fan speed to the thermostat control system. Therefore Auto Electrician Hayes only repairs electronics and electricals.